UNIDENTIFIED
ALI 386SX MAINBOARD
|
Processor |
80386SX/CX486SLC |
|
Processor Speed |
16/20/25/33MHz |
|
Chip Set |
None |
|
Max. Onboard DRAM |
16MB |
|
SRAM Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
216mm x 170mm |
|
I/O Options |
None |
|
NPU Options |
80387SX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J4 |
Turbo switch & LED |
J8 |
|
Reset switch |
J6 |
Power LED & keylock |
J9 |
|
Speaker |
J7 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
ADS signal delay disabled |
J5 |
pins 2 & 3 closed | |
|
ADS signal delay enabled |
J5 |
pins 1 & 2 closed | |
|
NPU mode select synchronous with CPU |
JP2 |
pins 1 & 2 closed | |
|
NPU mode select asynchronous |
JP2 |
pins 2 & 3 closed | |
|
RTC type select 146816 |
JP3 |
open | |
|
RTC type select DS1287 |
JP3 |
closed | |
|
Monitor type select monochrome |
JP4 |
open | |
|
Monitor type select color |
JP4 |
closed | |
|
Parity check enabled |
JP6 |
open | |
|
Parity check disabled |
JP6 |
closed | |
|
BUS CLOCK CONFIGURATION | ||
|
CPU Speed |
JP1 |
JP5 |
|
33MHz |
pins 2 & 3 closed |
pins 2 & 3 closed |
|
25MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
20MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
16MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
512KB |
(2) 256K x 9 |
NONE |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
NONE |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
|
8MB |
(2) 4M x 9 |
NONE |
|
16MB |
(2) 4M x 9 |
(2) 4M x 9 |